What kind of dizzy should I be looking for?

[Artelt]

I have an 84 k10 with a 305 and I was told I have the wrong distributor ( mine has no vacume advance) and that is part of the reason why it lacks major power going up any kind of hill and gets 8-9 mpg. I am planning on making a trip to the pull a part here when money allows. So I guess my question is what should I look for? Also mine says deco remy on top of the cap.

 

[bucket]

Sounds like it's the wrong one, my '84 305 has a vacuum advance.

 

[Artelt]

Did you get roughly 8-9 mpg in town? With seriously no power?

 

[bucket]

Mines only a 2wd, but I average 15 mpg city and highway combined. It's gutless off the line, but it has 2.56 gears out back.

Besides lacking a vacuum advance, your timing might just be set back too far. That alone can cause poor power and mpg, if it runs well otherwise.

 

[Artelt]

Yea I would say it runs decent enough I drive it everyday, burns oil smokes a little but good enough for me, cept for the mpg and the step side bed I love this old truck

 

[HotRodPC]

Well, 305's don't have much power to speak of anyway, BUT, you need a 74-86 HEI igntion dizzy. You can get a whole set up, with Cap, Rotor, Module, Dizzy and all for $49. See Skip White on Ebay.

This is the one I got, and I don't like this top, so I suggest going with the OE style coil cover and avoid that race coil look. It's a real PITA to take off a plug wire with is type.

http://www.ebay.com/itm/SBC-BBC-CHE...Parts_Accessories&hash=item51ac9057b0&vxp=mtr

I'd go with this style, and here it is in Black, and it's also available in Red, and I think Clear.
http://www.ebay.com/itm/SBC-BBC-CHE...Parts_Accessories&hash=item4d0a4a219a&vxp=mtr

In Red
http://www.ebay.com/itm/SBC-BBC-CHE...Parts_Accessories&hash=item5653e64013&vxp=mtr

In Clear with the coil cover I don't care for, but it's $3 more.
http://www.ebay.com/itm/SBC-BBC-CHE...Parts_Accessories&hash=item4d05c6d99a&vxp=mtr

In clear with the OE style coil cover for $49.50 shipped.
http://www.ebay.com/itm/SBC-BBC-CHE...Parts_Accessories&hash=item565188fcd7&vxp=mtr

 

[bigcountryguy19]

Does your truck have electronic spark control? Not shure what year it came out. I had an 85 that had it and it was junk, I just stabbed in a vaccume advance destributer and ran a ton better. ESP distributers had a four pin plug connector hanging out the bottom of them.

 

[HotRodPC]

There is also a way to bypass the ESC. I forget which 2 of the 4 wires you can cut, twist them together, then it functions just like a normal non ESC dizzy.

Any of dizzies I posted above will also bypass the ESC. IIRC, 81 was the was first year for ESC.

 

[Artelt]

Thank you guys for all the helpful information I counted three wires coming from the dizzy I may be wrong though I just took a quick look see in there. Now to order a new dizzy off of eBay the parts store here in town wants $120 for one and the junk yard wants $49 so I will just order it off line.

 

[Jims86]

Thank you guys for all the helpful information I counted three wires coming from the dizzy I may be wrong though I just took a quick look see in there. Now to order a new dizzy off of eBay the parts store here in town wants $120 for one and the junk yard wants $49 so I will just order it off line.

He should have a vac advance also. sounds like he may have a full on CC Q jet dist.

 

[Artelt]

So if I where to sell the one on there now how should I list it?

 

[HotRodPC]

So if I where to sell the one on there now how should I list it?

First thing to do is identify it. If it's a standard HEI and someone has taken off the Vac advance, it's prolly not worth the time to list. It might even be a racing dizzy and worth something. I know back in the race days, Mallory Unilite or Dual Point dizzies didn't have vac advance. For a race motor you pretty depend on full mechanical advance so vac advance isn't needed and the plate it solid.

So, first things first. Identify the dizzy.

 

[Boone83K10]

I would love to get 9 mpg from my K10. 6-7mpg is all I get around here, but I also have a built 350.

 

[Artelt]

Dizzy says delco remy on top, and it doesn't have a vacume, I think it's for a newer model truck, on the other hand I too wouldn't mind 8-9 mpg if and that's a BIG IF I had the power too go along with those perspective numbers